C Requires Chilkat v11.6.0+
C
Get the Last JSON-RPC Response from an MCP Server
See more MCP Client Examples
Demonstrates Mcp.GetLastJsonData, which returns the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most recent request into a JsonObject.
Tip: Code to parse the returned JSON can be generated with Chilkat's online tool at https://tools.chilkat.io/jsonParse.
Background. This exposes the full protocol-level response for inspection or debugging after any MCP request.
Chilkat C Downloads
#include <C_CkMcp.h>
#include <C_CkJsonObject.h>
void ChilkatSample(void)
{
BOOL success;
HCkMcp mcp;
HCkJsonObject toolsResult;
HCkJsonObject json;
success = FALSE;
mcp = CkMcp_Create();
// Connect to a public MCP (Model Context Protocol) server over its Streamable HTTP endpoint. The
// Microsoft Learn MCP server is public and requires no authentication.
success = CkMcp_Connect(mcp,"https://learn.microsoft.com/api/mcp");
if (success == FALSE) {
printf("%s\n",CkMcp_lastErrorText(mcp));
CkMcp_Dispose(mcp);
return;
}
// Perform an MCP request.
toolsResult = CkJsonObject_Create();
success = CkMcp_ListTools(mcp,toolsResult);
if (success == FALSE) {
printf("%s\n",CkMcp_lastErrorText(mcp));
CkMcp_Dispose(mcp);
CkJsonObject_Dispose(toolsResult);
return;
}
// Get the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most
// recent request.
json = CkJsonObject_Create();
CkMcp_GetLastJsonData(mcp,json);
CkJsonObject_putEmitCompact(json,FALSE);
printf("%s\n",CkJsonObject_emit(json));
// JSON parsing code for this result can be generated at Chilkat's online tool:
// https://tools.chilkat.io/jsonParse
CkMcp_Dispose(mcp);
CkJsonObject_Dispose(toolsResult);
CkJsonObject_Dispose(json);
}